Can you relocate for six months to a year to Ireland? The market there is absolutely nuts. I've been hired (a couple of years ago) as a Python contractor for 450 euros a day (~300 after taxes), after expressly telling them I don't know Python. ("Are you willing to learn?" "Sure." "Great, you have plenty of experience, you'll figure it out in no time. Sign here.") Sure, for someone from the US that's low, but I'm from Eastern Europe.
I just came from a year in the Benelux, that's how I managed to save a bit, but now that I have a buffer I'd rather stay put for a while.
Still, even your €450/h is less than csomar's $100/h, which they are apparently earning in a third-world country.
Yeah, that's beyond my capabilities at the moment. Besides Upwork, I have also used Toptal - when I find contracts (not very often) it pays quite well, and remote beats relocation (especially since I have children in school).
Just want to point out that even for someone in the US 450EU/day is not really that low. Granted there's $100+/hour some are charging bu it's not really a regular for > 6 months contracts. Salutare!